Abstract
The aim of this paper is to describe the main design and execution criteria regarding the quay wall solution adopted which is being constructed at a length of approximately 1000 meters in the new container terminal at the Lomé Port, Togo. These structures include a 29-meter deep reinforced concrete diaphragm wall, connected to an anchored dead man wall through a 45-meter long steel tie rod system. The quay cranes will run over the diaphragm wall on the sea side on a beam, founded on bored piles on the land side. Several constraints were taken into consideration, for example, the geological-geotechnical conditions as well as the high loads (due to the bollards and the crane rails), the durability, the safety and the costs. As a result of a soft clay layer, located next to the diaphragm wall tip, the ground at the wall tip level was improved in several sections with jet grout columns to prevent punching and increase the overall stability. The soil in the passive zone of the diaphragm wall was also improved with jet grouting columns to reduce the deformation and the bending moments in the quay wall.
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